Tension device for loom-shuttles.



P. BOISVERT.

TENSION DEVICE FOR LOOM SHUTTLE-S. APPrlcATloN F1150 1AN.11. 1911.

WITNESSES:

Patented Nov. 30, 1915.

[VI/ENTOR.

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-k/ "'JMI ATTORNEY,

HLIPPE BSVEBTI.- `TSETTS, ASSG-NGR, BY DIRECT AEP MESNE ASSIGTMENTS, @E@NEFxL-T TO ERFEEST MALLE, Ol IDRAG', MASSACHUSETTS, NB E-FGRLH TOFRTER. LO'WELL, MSSAGHSETTS.

' im: Ehe yam fmm. the 7 Fiv mms Ems' Y 'to the devery-eye a" of thefmte. ngflem `enstruet0n, and leand, :residing at doel" B is providedwith A and Coluunmw; read-passage indieued. by *1 and 3 at und ai. the

she eounw of Mddlesvi of Mussafjhusetts have e new and useful' nipfementTmswq if; tlrough Winch the thym-fl Dex/'ieee for Boem-Shutles? of wh-.t. mud passage substa aiy 'Northrop patent. proan inverted arch in.which my mfrzmge.

lowing is :z epecfcatien. v

This invenlo e'e for lGom-shues imeans fm' ecemateiy 1", on the yam asmay be de by the size an strength of the pul Qn the yam steady a thus toprevent knking uf tw ing 01 the yam on the We, quent breakage'of said j;of .said ofk.

'le use of to zur sheet meaa beni into the fmm zw inveled and of a, sizefla) the haie b2 and tu exen bleek from side 50 si '511e re, fide sindense@ at Ome ewf Cmespanihl in the side of :frein Su C4 khe Q11described in ing shuttle provmed w U, e Jeefqv in :1. :ne gb .he immerpart of tbe piece h the piece@1 in which -screw which runs which saideviee may be @y a Ix he accompanying chawu.. E v ful-@ugh the p' misali?.

minets ngenst the shank of l the ezpam mw *bhe tunel" die inner .falceis a plan of the devely-end perizie sm'-tle containing my mproveme 13;V15 front elevati@ el the. theadng; boev wehen), and efmaning mjy*imprime Fig. 3 a reaf-e vtm of Che my eX/ice ou me a a2 which receives"che vineadng Mock 'the teusiGn-peee F 'en device consists of a, case D.

block? Y ing thereon. ll he lower end of the tensionpiece F is providedwith a projection 7" which extends under a shoulder on thestationary-piece E to give a greater bearing surface to the bottoni ofsaid piece F, the top of said projection and the bottom of said shoulderbeing parallel with the tension-pin to guide said piece F. The faces ofthe cas D are cut away on both sides at d2 (Z3, to allow the yarn topass between the tensionpieces without contact with the case.

lVhen the tension-piece is inserted in a threading-block and the latteris placed in the shuttle-body, said case is prevented from movement bythe ears l l1 and the sides of the cavity which .holds thethreadingblock.

ViThen the shuttle is threaded in the usual manner, the yarn is drawndown in the act of threading between the tension-pieces which arerounded ofil on their inner `faces at the top c3 f2 to allow the threadto enter the space between said tension-piece without difficulty.

l claim as my invention :hv

1. The combination in a loom-shuttle having a longitudinal tin-cadpassage, of tension pieces arranged parallelr with said thread passage,one oi said pieces being fixed and the other movable, to admita threadbetween said pieces, one of said pieces having a recess, a springarranged in said recess, a pin passing freely through said spring andsaid last-nan'ied piece and into the other of said pieces to compresssaid spring` to vary the tension thereof, and means carried by saidlastnained piece to retain said pin from movement therein.

2. The combination in a loomshuttle having a longitudinal passage, oftension pieces arranged parallel with said thread passage, one of saidpieces beingsr fixed and the other movable, to admit a thread betweensaid pieces, one of said pieces having a recess, a

tudinal thread-passage and a hole trans-- versely ol' said passage andhaving depressions, of a case adapted to iill said hole and in use to beretained therein by the sides of said cavity and having` ears to enterthe depressions in said block, tension-pieces, one of which isrigidly'in said case and the other of which is movable therein, theadjacent faces oit said tension-pieces being parallel with saidthread-passage, and a spring to force said movable piece toward saidrigid piece.

si. The combination in a loom-shuttle of a threading-block having alongitudinal thread-passage and a hole transversely of .said passage, acase adapted to tit said hole, tension-pieces arranged in said case,`one of said pieces being rigidly secured in said case and having atransverse hole and a recess at the outer end of said hole andconcentric with said hole, and having a shoulder, and the other of saidpieces having a projection which extends under said shoulder and bearson the under surface thereof, a tension-pin parallel with the contiguoussurfaces of said' shoulder and projection and adjustably secured in saidlastnained tension-piece and extending through said transverse hole intosaid recess and having a head Within said recess, and a springcompressed between said head and the bottom of said recess.

In witness whereof, I have alixed my signature in presence 'of twowitnesses.

PHILIPPE BOISVERT. Witnesses Annuler M. Moons, lCnNns'r MAiLLB.

